- +(double)distanceBetweenOrderBy:(double)lat1 :(double)lat2 :(double)lng1 :(double)lng2{
- double dd = M_PI/180;
- double x1=lat1*dd,x2=lat2*dd;
- double y1=lng1*dd,y2=lng2*dd;
- double R = 6371004;
- double distance = (2*R*asin(sqrt(2-2*cos(x1)*cos(x2)*cos(y1-y2) - 2*sin(x1)*sin(x2))/2));
- //km 返回
- // return distance*1000;
- //返回 m
- return distance;
- }
来源: http://www.phpxs.com/code/1005489/